SINGAPORE: Oil prices fell on Tuesday, extending losses from the previous session amid concerns about demand in China, the world’s largest crude importer, while the market shrugged off the risk of conflict escalating in the Middle East. Brent crude oil futures fell by 40 cents, or 0.5 percent, to $79.38 a barrel by 8:40 a.m. Saudi time. US crude futures were down 43 cents, or 0.6 percent, at $75.38 a barrel.